Deatherage was working a traffic stop along Interstate 55 near Litchfield on Nov. 26 when the passing trucker lost consciousness. His semi struck and killed the trooper.

In a statement, the company says the driver was a military veteran with an unblemished driving record, despite his medical issues.

Dot says he was operating in accordance with federal transportation guidelines. The company also says it wasn’t aware of any reason why the trucker couldn’t safely operate a semi under federal regulations. (AP)